import axios from "axios";
import { MessageBox, Message } from "element-ui";
import store from "@/store";
import { getToken } from "@/utils/auth";

// create an axios instance
const service = axios.create({
	baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
	// withCredentials: true, // send cookies when cross-domain requests
	timeout: 10000 // request timeout
});

// request interceptor
service.interceptors.request.use(
	(config) => {
		// do something before request is sent

		if (store.getters.token) {
			// let each request carry token
			// ['X-Token'] is a custom headers key
			// please modify it according to the actual situation
			config.headers["token"] = getToken();
		}
		return config;
	},
	(error) => {
		// do something with request error
		console.log(error); // for debug
		return Promise.reject(error);
	}
);

// response interceptor
service.interceptors.response.use(
	/**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

	/**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
	(response) => {
		const res = response.data;

		// if the custom code is not 20000, it is judged as an error.
		if (res.code !== 20000 && res.code !== 200) {
			Message({
				message: res.message || "Error",
				type: "error",
				duration: 5 * 1000
			});

			// 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
			if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
				// to re-login
				MessageBox.confirm(
					"You have been logged out, you can cancel to stay on this page, or log in again",
					"Confirm logout",
					{
						confirmButtonText: "Re-Login",
						cancelButtonText: "Cancel",
						type: "warning"
					}
				).then(() => {
					store.dispatch("user/resetToken").then(() => {
						location.reload();
					});
				});
			}
			return Promise.reject(new Error(res.message || "Error"));
		} else {
			return res;
		}
	},
	(error) => {
		console.log("err" + error); // for debug
		Message({
			message: error.message,
			type: "error",
			duration: 5 * 1000
		});
		return Promise.reject(error);
	}
);

export default service;
